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        data-chapter-title="协程实现多任务"
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                        MXY整理版Python基础
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            <span><b>1.</b> Python的安装和简介</span>
            
            
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                            <b>1.1.</b>
                        
                        Python的基础知识
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                            <b>1.2.</b>
                        
                        Python安装及版本检测
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                            <b>1.3.</b>
                        
                        第一个Python程序
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            <span><b>2.</b> Python的基本语法</span>
            
            
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                        注释及语句分类
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                        命名方式和关键字
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            <span><b>3.</b> Python的变量及数据类型</span>
            
            
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                            <b>3.1.</b>
                        
                        变量
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                            <b>3.2.</b>
                        
                        数据类型
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                            <b>3.3.</b>
                        
                        数据类型转换
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                            <b>3.4.</b>
                        
                        数据类型转换
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            <span><b>4.</b> Python的流程控制</span>
            
            
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                            <b>4.1.</b>
                        
                        顺序结构和分支结构
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                            <b>4.2.</b>
                        
                        循环结构
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            <span><b>5.</b> 函数及作用域</span>
            
            
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                            <b>5.1.</b>
                        
                        函数
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                            <b>5.2.</b>
                        
                        函数文档
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                            <b>5.3.</b>
                        
                        变量的作用域
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                        内部函数和闭包操作
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                            <b>5.5.</b>
                        
                        lambda表达式
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                            <b>5.6.</b>
                        
                        高阶函数
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            <span><b>6.</b> 内置函数及操作</span>
            
            
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                            <b>6.1.</b>
                        
                        字符串相关
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                            <b>6.2.</b>
                        
                        format格式字符串
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                            <b>6.3.</b>
                        
                        内建函数
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                            <b>6.4.</b>
                        
                        列表
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                            <b>6.5.</b>
                        
                        元组
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                            <b>6.6.</b>
                        
                        字典
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                            <b>6.7.</b>
                        
                        集合
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                            <b>6.8.</b>
                        
                        文件操作
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            <span><b>7.</b> 常用的模块</span>
            
            
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                            <b>7.1.</b>
                        
                        String模块
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                            <b>7.2.</b>
                        
                        math模块
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                            <b>7.3.</b>
                        
                        OS模块
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                            <b>7.4.</b>
                        
                        zipfile模块
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                            <b>7.5.</b>
                        
                        tarfile模块
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                            <b>7.6.</b>
                        
                        shutil模块
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                            <b>7.7.</b>
                        
                        时间相关模块
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        <li class="chapter " data-level="8" >
            
            <span><b>8.</b> 面向对象</span>
            
            
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                            <b>8.1.</b>
                        
                        类和对象-上
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                            <b>8.2.</b>
                        
                        类和对象-下
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                            <b>8.3.</b>
                        
                        魔术方法
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                            <b>8.4.</b>
                        
                        装饰器
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                            <b>8.5.</b>
                        
                        抽象类
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                            <b>8.6.</b>
                        
                        错误和异常处理
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                            <b>8.7.</b>
                        
                        模块和包
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        <li class="chapter " data-level="9" >
            
            <span><b>9.</b> tkinter模块</span>
            
            
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        <li class="chapter " data-level="9.1" data-path="home/9.tkinter模块/tkinter模块.html">
            
                
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                            <b>9.1.</b>
                        
                        tkinter模块
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        <li class="chapter " data-level="10" data-path="home/10.网络编程/1.网络编程.html">
            
                
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                            <b>10.</b>
                        
                        网络编程
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        <li class="chapter " data-level="10.1" data-path="home/10.网络编程/2.TCP编程.html">
            
                
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                            <b>10.1.</b>
                        
                        TCP编程
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        <li class="chapter " data-level="10.2" data-path="home/10.网络编程/3.UDP编程.html">
            
                
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                            <b>10.2.</b>
                        
                        UDP编程
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        <li class="chapter " data-level="11" data-path="home/11.多任务/多任务原理.html">
            
                
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                            <b>11.</b>
                        
                        多任务
                    </a>
            
            
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        <li class="chapter " data-level="11.1" data-path="home/11.多任务/1.多进程实现多任务.html">
            
                
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                            <b>11.1.</b>
                        
                        多进程实现多任务
                    </a>
            
            
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        <li class="chapter " data-level="11.2" data-path="home/11.多任务/2.多线程实现多任务.html">
            
                
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                            <b>11.2.</b>
                        
                        多线程实现多任务
                    </a>
            
            
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        <li class="chapter active" data-level="11.3" data-path="home/11.多任务/3.协程实现多任务.html">
            
                
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                            <b>11.3.</b>
                        
                        协程实现多任务
                    </a>
            
            
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        <li class="chapter " data-level="12" >
            
            <span><b>12.</b> Python实战项目</span>
            
            
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        <li class="chapter " data-level="12.1" data-path="home/12.Python实战项目/1.简易计算器.html">
            
                
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                            <b>12.1.</b>
                        
                        简易计算器
                    </a>
            
            
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                        银行项目
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                            <b>12.5.</b>
                        
                        双色球
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                        python垃圾回收机制
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                            <b>12.7.</b>
                        
                        turtle画国旗
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                            <b>12.8.</b>
                        
                        turtle画小猪佩奇
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                            <b>12.9.</b>
                        
                        turtle画个表
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<li>&#x534F;&#x7A0B;&#x62E5;&#x6709;&#x81EA;&#x5DF1;&#x7684;&#x5BC4;&#x5B58;&#x5668;&#x4E0A;&#x4E0B;&#x6587;&#x548C;&#x6808;&#x3002;&#x534F;&#x7A0B;&#x8C03;&#x5EA6;&#x5207;&#x6362;&#x65F6;&#xFF0C;&#x5C06;&#x5BC4;&#x5B58;&#x5668;&#x4E0A;&#x4E0B;&#x6587;&#x548C;&#x6808;&#x4FDD;&#x5B58;&#x5230;&#x5176;&#x4ED6;&#x5730;&#x65B9;&#xFF0C;&#x5728;&#x5207;&#x56DE;&#x6765;&#x7684;&#x65F6;&#x5019;&#xFF0C;&#x6062;&#x590D;&#x5148;&#x524D;&#x4FDD;&#x5B58;&#x7684;&#x5BC4;&#x5B58;&#x5668;&#x4E0A;&#x4E0B;&#x6587;&#x548C;&#x6808;&#x3002;&#x56E0;&#x6B64;&#xFF1A;&#x534F;&#x7A0B;&#x80FD;&#x4FDD;&#x7559;&#x4E0A;&#x4E00;&#x6B21;&#x8C03;&#x7528;&#x65F6;&#x7684;&#x72B6;&#x6001;&#xFF08;&#x5373;&#x6240;&#x6709;&#x5C40;&#x90E8;&#x72B6;&#x6001;&#x7684;&#x4E00;&#x4E2A;&#x7279;&#x5B9A;&#x7EC4;&#x5408;&#xFF09;&#xFF0C;&#x6BCF;&#x6B21;&#x8FC7;&#x7A0B;&#x91CD;&#x5165;&#x65F6;&#xFF0C;&#x5C31;&#x76F8;&#x5F53;&#x4E8E;&#x8FDB;&#x5165;&#x4E0A;&#x4E00;&#x6B21;&#x8C03;&#x7528;&#x7684;&#x72B6;&#x6001;&#xFF0C;&#x6362;&#x79CD;&#x8BF4;&#x6CD5;&#xFF1A;&#x8FDB;&#x5165;&#x4E0A;&#x4E00;&#x6B21;&#x79BB;&#x5F00;&#x65F6;&#x6240;&#x5904;&#x903B;&#x8F91;&#x6D41;&#x7684;&#x4F4D;&#x7F6E;</li>
</ul>
</li>
<li><h3 id="&#x534F;&#x7A0B;&#x7684;&#x4F18;&#x7F3A;&#x70B9;">&#x534F;&#x7A0B;&#x7684;&#x4F18;&#x7F3A;&#x70B9;</h3>
<ul>
<li><h4 id="&#x534F;&#x7A0B;&#x7684;&#x4F18;&#x70B9;">&#x534F;&#x7A0B;&#x7684;&#x4F18;&#x70B9;</h4>
<ul>
<li>&#x65E0;&#x9700;&#x7EBF;&#x7A0B;&#x4E0A;&#x4E0B;&#x6587;&#x5207;&#x6362;&#x7684;&#x5F00;&#x9500;&#xFF0C;&#x534F;&#x7A0B;&#x907F;&#x514D;&#x4E86;&#x65E0;&#x610F;&#x4E49;&#x7684;&#x8C03;&#x5EA6;&#xFF0C;&#x7531;&#x6B64;&#x53EF;&#x4EE5;&#x63D0;&#x9AD8;&#x6027;&#x80FD;&#xFF08;&#x4F46;&#x4E5F;&#x56E0;&#x6B64;&#xFF0C;&#x7A0B;&#x5E8F;&#x5458;&#x5FC5;&#x987B;&#x81EA;&#x5DF1;&#x627F;&#x62C5;&#x8C03;&#x5EA6;&#x7684;&#x8D23;&#x4EFB;&#xFF0C;&#x540C;&#x65F6;&#xFF0C;&#x534F;&#x7A0B;&#x4E5F;&#x5931;&#x53BB;&#x4E86;&#x6807;&#x51C6;&#x7EBF;&#x7A0B;&#x4F7F;&#x7528;&#x591A;CPU&#x7684;&#x80FD;&#x529B;&#xFF09;</li>
<li>&#x65E0;&#x9700;&#x539F;&#x5B50;&#x64CD;&#x4F5C;&#x9501;&#x5B9A;&#x53CA;&#x540C;&#x6B65;&#x7684;&#x5F00;&#x9500;</li>
<li>&#x65B9;&#x4FBF;&#x5207;&#x6362;&#x63A7;&#x5236;&#x6D41;&#xFF0C;&#x7B80;&#x5316;&#x7F16;&#x7A0B;&#x6A21;&#x578B;</li>
<li>&#x9AD8;&#x5E76;&#x53D1;+&#x9AD8;&#x6269;&#x5C55;&#x6027;+&#x4F4E;&#x6210;&#x672C;&#xFF1A;&#x4E00;&#x4E2A;CPU&#x652F;&#x6301;&#x4E0A;&#x4E07;&#x7684;&#x534F;&#x7A0B;&#x90FD;&#x4E0D;&#x662F;&#x95EE;&#x9898;&#x3002;&#x6240;&#x4EE5;&#x5F88;&#x9002;&#x5408;&#x7528;&#x4E8E;&#x9AD8;&#x5E76;&#x53D1;&#x5904;&#x7406;&#x3002;</li>
</ul>
</li>
<li><h4 id="&#x534F;&#x7A0B;&#x7684;&#x7F3A;&#x70B9;">&#x534F;&#x7A0B;&#x7684;&#x7F3A;&#x70B9;</h4>
<ul>
<li>&#x65E0;&#x6CD5;&#x5229;&#x7528;&#x591A;&#x6838;&#x8D44;&#x6E90;&#xFF1A;&#x534F;&#x7A0B;&#x7684;&#x672C;&#x8D28;&#x662F;&#x4E2A;&#x5355;&#x7EBF;&#x7A0B;,&#x5B83;&#x4E0D;&#x80FD;&#x540C;&#x65F6;&#x5C06; &#x5355;&#x4E2A;CPU &#x7684;&#x591A;&#x4E2A;&#x6838;&#x7528;&#x4E0A;,&#x534F;&#x7A0B;&#x9700;&#x8981;&#x548C;&#x8FDB;&#x7A0B;&#x914D;&#x5408;&#x624D;&#x80FD;&#x8FD0;&#x884C;&#x5728;&#x591A;CPU&#x4E0A;.&#x5F53;&#x7136;&#x6211;&#x4EEC;&#x65E5;&#x5E38;&#x6240;&#x7F16;&#x5199;&#x7684;&#x7EDD;&#x5927;&#x90E8;&#x5206;&#x5E94;&#x7528;&#x90FD;&#x6CA1;&#x6709;&#x8FD9;&#x4E2A;&#x5FC5;&#x8981;&#xFF0C;&#x9664;&#x975E;&#x662F;cpu&#x5BC6;&#x96C6;&#x578B;&#x5E94;&#x7528;&#x3002;</li>
<li>&#x8FDB;&#x884C;&#x963B;&#x585E;&#xFF08;Blocking&#xFF09;&#x64CD;&#x4F5C;&#xFF08;&#x5982;IO&#x65F6;&#xFF09;&#x4F1A;&#x963B;&#x585E;&#x6389;&#x6574;&#x4E2A;&#x7A0B;&#x5E8F;</li>
</ul>
</li>
</ul>
</li>
</ul>
<hr>
<ul>
<li><h2 id="yield&#x5B9E;&#x73B0;&#x534F;&#x7A0B;">yield&#x5B9E;&#x73B0;&#x534F;&#x7A0B;</h2>
<p>  ```py
  def consumer(name):</p>
<pre><code>  print(&quot;&#x8981;&#x5F00;&#x59CB;&#x5543;&#x9AA8;&#x5934;&#x4E86;...&quot;)
  while True:
      print(&quot;\033[31;1m[consumer] %s\033[0m &quot; % name)
      bone = yield
      print(&quot;[%s] &#x6B63;&#x5728;&#x5543;&#x9AA8;&#x5934; %s&quot; % (name, bone))
</code></pre></li>
</ul>
<pre><code>def producer(obj1, obj2):
    obj1.send(None)    # &#x542F;&#x52A8;obj1&#x8FD9;&#x4E2A;&#x751F;&#x6210;&#x5668;,&#x7B2C;&#x4E00;&#x6B21;&#x5FC5;&#x987B;&#x7528;None  &lt;==&gt; obj1.__next__()
    obj2.send(None)    # &#x542F;&#x52A8;obj2&#x8FD9;&#x4E2A;&#x751F;&#x6210;&#x5668;,&#x7B2C;&#x4E00;&#x6B21;&#x5FC5;&#x987B;&#x7528;None  &lt;==&gt; obj2.__next__()
    n = 0
    while n &lt; 5:
        n += 1
        print(&quot;\033[32;1m[producer]\033[0m &#x6B63;&#x5728;&#x751F;&#x4EA7;&#x9AA8;&#x5934; %s&quot; % n)
        obj1.send(n)
        obj2.send(n)


if __name__ == &apos;__main__&apos;:
    con1 = consumer(&quot;&#x6D88;&#x8D39;&#x8005;A&quot;)
    con2 = consumer(&quot;&#x6D88;&#x8D39;&#x8005;B&quot;)
    producer(con1, con2)
```
</code></pre><hr>
<ul>
<li><h2 id="greenlet">greenlet</h2>
<p>  ```py
  from greenlet import greenlet</p>
<h1 id="greenlet-&#x5176;&#x5B9E;&#x5C31;&#x662F;&#x624B;&#x52A8;&#x5207;&#x6362;&#xFF1B;gevent&#x662F;&#x5BF9;greenlet&#x7684;&#x5C01;&#x88C5;&#xFF0C;&#x53EF;&#x4EE5;&#x5B9E;&#x73B0;&#x81EA;&#x52A8;&#x5207;&#x6362;">greenlet &#x5176;&#x5B9E;&#x5C31;&#x662F;&#x624B;&#x52A8;&#x5207;&#x6362;&#xFF1B;gevent&#x662F;&#x5BF9;greenlet&#x7684;&#x5C01;&#x88C5;&#xFF0C;&#x53EF;&#x4EE5;&#x5B9E;&#x73B0;&#x81EA;&#x52A8;&#x5207;&#x6362;</h1>
<p>  def test1():</p>
<pre><code>  print(&quot;123&quot;)
  gr2.switch()   # &#x5207;&#x6362;&#x53BB;&#x6267;&#x884C;test2
  print(&quot;456&quot;)
  gr2.switch()   # &#x5207;&#x6362;&#x56DE;test2&#x4E4B;&#x524D;&#x6267;&#x884C;&#x5230;&#x7684;&#x4F4D;&#x7F6E;&#xFF0C;&#x63A5;&#x7740;&#x6267;&#x884C;
</code></pre><p>  def test2():    </p>
<pre><code>  print(&quot;789&quot;)
  gr1.switch()   # &#x5207;&#x6362;&#x56DE;test1&#x4E4B;&#x524D;&#x6267;&#x884C;&#x5230;&#x7684;&#x4F4D;&#x7F6E;&#xFF0C;&#x63A5;&#x7740;&#x6267;&#x884C;
  print(&quot;666&quot;)
</code></pre></li>
</ul>
<pre><code>gr1 = greenlet(test1)   # &#x542F;&#x52A8;&#x4E00;&#x4E2A;&#x534F;&#x7A0B; &#x6CE8;&#x610F;test1&#x4E0D;&#x8981;&#x52A0;()
gr2 = greenlet(test2)   #
gr1.switch()
```
</code></pre><hr>
<ul>
<li><h2 id="gevent-&#x5B9E;&#x73B0;&#x534F;&#x7A0B;">gevent &#x5B9E;&#x73B0;&#x534F;&#x7A0B;</h2>
<pre><code class="lang-py">  <span class="hljs-keyword">import</span> gevent

  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">func1</span><span class="hljs-params">()</span>:</span>
      print(<span class="hljs-string">&quot;func1 running&quot;</span>)
      gevent.sleep(<span class="hljs-number">2</span>)             <span class="hljs-comment"># &#x5185;&#x90E8;&#x51FD;&#x6570;&#x5B9E;&#x73B0;io&#x64CD;&#x4F5C;</span>
      print(<span class="hljs-string">&quot;switch func1&quot;</span>)

  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">func2</span><span class="hljs-params">()</span>:</span>
      print(<span class="hljs-string">&quot;func2 running&quot;</span>)
      gevent.sleep(<span class="hljs-number">1</span>)
      print(<span class="hljs-string">&quot;switch func2&quot;</span>)

  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">func3</span><span class="hljs-params">()</span>:</span>
      print(<span class="hljs-string">&quot;func3  running&quot;</span>)
      gevent.sleep(<span class="hljs-number">0</span>)
      print(<span class="hljs-string">&quot;func3 done..&quot;</span>)

  gevent.joinall([gevent.spawn(func1),
                  gevent.spawn(func2),
                  gevent.spawn(func3),
                  ])
</code></pre>
</li>
</ul>
<hr>
<ul>
<li><h2 id="&#x722C;&#x866B;&#x7684;&#x60C5;&#x51B5;">&#x722C;&#x866B;&#x7684;&#x60C5;&#x51B5;</h2>
<ul>
<li><p>&#x7334;&#x5B50;&#x8865;&#x4E01; monkey patch</p>
<ul>
<li>&#x7528;&#x6765;&#x5728;&#x8FD0;&#x884C;&#x65F6;&#x52A8;&#x6001;&#x4FEE;&#x6539;&#x5DF2;&#x6709;&#x7684;&#x4EE3;&#x7801;&#xFF0C;&#x800C;&#x4E0D;&#x9700;&#x8981;&#x4FEE;&#x6539;&#x539F;&#x59CB;&#x4EE3;&#x7801;&#x3002;</li>
</ul>
<pre><code class="lang-py"><span class="hljs-keyword">from</span> urllib <span class="hljs-keyword">import</span> request
<span class="hljs-keyword">import</span> gevent,time
<span class="hljs-keyword">from</span> gevent <span class="hljs-keyword">import</span> monkey

monkey.patch_all()    <span class="hljs-comment"># &#x628A;&#x5F53;&#x524D;&#x7A0B;&#x5E8F;&#x4E2D;&#x7684;&#x6240;&#x6709;io&#x64CD;&#x4F5C;&#x90FD;&#x505A;&#x4E0A;&#x6807;&#x8BB0;</span>

<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">spider</span><span class="hljs-params">(url)</span>:</span>
  print(<span class="hljs-string">&quot;GET:%s&quot;</span> % url)
  resp = request.urlopen(url)
  data = resp.read()
  print(<span class="hljs-string">&quot;%s bytes received from %s..&quot;</span> % (len(data), url))

urls = [
  <span class="hljs-string">&quot;https://www.python.org/&quot;</span>,
  <span class="hljs-string">&quot;https://www.yahoo.com/&quot;</span>,
  <span class="hljs-string">&quot;https://github.com/&quot;</span>
]

start_time = time.time()
<span class="hljs-keyword">for</span> url <span class="hljs-keyword">in</span> urls:
  spider(url)
print(<span class="hljs-string">&quot;&#x540C;&#x6B65;&#x8017;&#x65F6;&#xFF1A;&quot;</span>,time.time() - start_time)

async_time_start = time.time()
gevent.joinall([
  gevent.spawn(spider,<span class="hljs-string">&quot;https://www.python.org/&quot;</span>),
  gevent.spawn(spider,<span class="hljs-string">&quot;https://www.yahoo.com/&quot;</span>),
  gevent.spawn(spider,<span class="hljs-string">&quot;https://github.com/&quot;</span>),
])
print(<span class="hljs-string">&quot;&#x5F02;&#x6B65;&#x8017;&#x65F6;&#xFF1A;&quot;</span>,time.time() - async_time_start)
</code></pre>
</li>
</ul>
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